It was discussed long ago that csum_and_copy_from_user() performs
better than plain copy_from_user() on x86. I do not remember all
details, but I do know that using copy_from_user() is not a real
improvement at least on x86 architecture.
The rest of the changes (ie. the getfrag() logic to set
skb->ip_summed) looks fine.
This patch fixes the problem of x86 csum_partilal() routines which
can't handle odd addressed buffers.
I've sent Linus this fix already.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to email@example.com
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/